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18234545124480 = 2735172337976397
BaseRepresentation
bin1000010010101100011111…
…00101011011010010000000
32101120012112210122111012220
410021112033211123102000
54342223322022440410
6102440500121051040
73561255012130266
oct411261745332200
971505483574186
1018234545124480
1158a0255392803
122065b88326a80
13a23682c795b9
144707b17cc436
152194c7eaa070
hex10958f95b480

18234545124480 has 512 divisors, whose sum is σ = 64244265039360. Its totient is φ = 4375697424384.

The previous prime is 18234545124413. The next prime is 18234545124557. The reversal of 18234545124480 is 8442154543281.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2850480642 + ... + 2850487038.

It is an arithmetic number, because the mean of its divisors is an integer number (125477080155).

Almost surely, 218234545124480 is an apocalyptic number.

18234545124480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18234545124480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32122132519680).

18234545124480 is an abundant number, since it is smaller than the sum of its proper divisors (46009719914880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18234545124480 is a wasteful number, since it uses less digits than its factorization.

18234545124480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10256 (or 10244 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 51.

The spelling of 18234545124480 in words is "eighteen trillion, two hundred thirty-four billion, five hundred forty-five million, one hundred twenty-four thousand, four hundred eighty".